52657778 has 16 divisors (see below), whose sum is σ = 85827840. Its totient is φ = 24138000.

The previous prime is 52657769. The next prime is 52657783. The reversal of 52657778 is 87775625.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21173 + ... + 23528.

It is an arithmetic number, because the mean of its divisors is an integer number (5364240).

Almost surely, 2^52657778 is an apocalyptic number.

52657778 is a deficient number, since it is larger than the sum of its proper divisors (33170062).

52657778 is a wasteful number, since it uses less digits than its factorization.

52657778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44753.

The product of its digits is 823200, while the sum is 47.

The square root of 52657778 is about 7256.5679215453. The cubic root of 52657778 is about 374.8183487625.

It can be divided in two parts, 52657 and 778, that added together give a palindrome (53435).

The spelling of 52657778 in words is "fifty-two million, six hundred fifty-seven thousand, seven hundred seventy-eight".